import yaml
from utils.project_paths import config_dir

class TopicGroup:
    def __init__(self, config_path=f"{config_dir}/topic_map.yaml"):
        with open(config_path, "r") as f:
            data = yaml.safe_load(f)
            self.topics = data.get("topics", [])  # 直接获取 topic 列表

    def __iter__(self):
        """支持迭代遍历 topics"""
        return iter(self.topics)

    def __len__(self):
        return len(self.topics)

    def __str__(self):
        return str(self.topics)


if __name__ == '__main__':
    tg = TopicGroup()
    for i in tg:
        mmode = i.split("_")[1]
        print(mmode)